Sidney howe short



(No Model.)

v S. H. SHORT.

ELECTRIC LOGQMOTIVB.

Patented Deo. 18, 18.

un lllillllwv ll l uuml NiTn STATES ATENT Trice.

SIDNEY I'IOIVE SHORT, OE DENVER, COLORADO, ASSIGNOR, TO THE UNITED STATES ELECTRIC COMPANY, OE SAME PLACE.

ELECTRIC LOCOMOTIVE.

SPECIFICATION forming part of Letters Patent No. 394,887, dated December 18, 1888.

Application tiled October 23, 1886. Serial No, 217,016. (No model.)

To all whom it may concern,.-

Be it known that I, SIDNEY Hown SHORT, of Deliver', in the county ot' Arapahoe and State ol" Colorado, have invented a new and useful Improvement in Electric Locomotives; and I do hereby declare that the following is a full, clear, and exact description of the same.

In an electric locomotive there are several things which are necessary in the construction in order to make a machine which will stand the wear and tear to which locomotives are subject.

An electric locomotive which is designed to carry upon its trucks only one coach should be made as light as possible. To `get the greatest eliiciency trom. the motor, an electric motor should be run at a high speed, using small quantityot' current and high tension or electro-motive torce. In order 1o be able to gear down from a high-speed motor-shaft to the slow-runnin axles of the locomotive, it is necessary to have some ettcient means ot' gearing to transmit the power. 'lecause of the nicety with which the brushes oi' a motor must be set to make it develop its maximum power with economy, it is not practicalde to reverse the motor by changing the position of the brushes. the locomotive can best be made in the gearing. For climbing steep grades provision must be made l'or using all the wheels as drivers, so that slipping will not occur. The trame ot' the locomotive must have rigidly attached to vit the journals in which the axles run, to which the gearing' is fastened. The other axle, however, must have its journals provided with spring-pedestals, so that all the wheels may tread on the rails. Vhere motors are run in series with one another upon a single-line conductor on which the tension is high and the insulation good, it is necessary to insulate the motor itself from the iron-work of the Ytrame and the gearing, ben cause the static charge ot 'the line tends to break the insulation ot' the motor.

It is the object ot this invention to meet the requirements above explained.

Referring to the accompanying drawings, Figure l represents a plan, and Fig. 2 a side elevation, partly in section, of the electric lo- The change in the direction ofK comotive. Figs. 3 and t show details of construction.

The supporti11g-trame ot' the locomotive is mainly composed ot' a beam bent around at the ends and returning in to itself, so that it maybe toi-ined ot' a single piece. I prefer to make this trame out oli' ordinary T- rail used upon railways, arranged in an inverted position, as shown inthe drawings. This gives a broad bearing suitable t'or the attachment ot' the parts on the upper side, and at the same time att'ords cross-beams ot' great strength. Upon this frame are set inverted cheek-pieces or pedestals. These pedestals are bolted to the tlanges of the rail-beam, as shown in Eig. l, in an inverted position. One pair ol' these pedestals, marked Q, is formed with a cross bar, which with the strap across the ends holds the bearing-blocks B rigidly to the pedestal. In the other pair of pedestals, R, the bearing-blocks I3 are arranged to slide between the opposite laees oit the pedestal and above the block, and between it and the strap across the end ot the pedestal is an interposed spring. One end ot'vthe frame is supported upon one pair of wheels rigidly, the axle oo turning in the beari'ng-l'docks Il. The other end ot' the frame is supported upon the axle which turns in the movable blocks B, and the t rame is supported upon these blocks between the interposed springs. The wheels te are txed to the outer ends of the axles, and in the center of the rounded ends of the trame are the appliances T T for supporting and moving the current-gatherer, or for the attachment of pilots. They consist ot. sockets secured to the trame adapted to receive the spindles ot' the driving-rods of the current-gatherer or of the pilots. Between the pairs of wheels are two cross-beams, b Z), bolted to the f rame and arranged to support the motor M, wh ich is insulated' upon these beams, as shown in Eig. 3, connection being made through the back armatures, o CL, of the motor.

Eig. illustrates the manner of attachment, which is the same for both, but partly refers to the back armature, e. To the cross-beams b are lixed upright bolts e e', having at the lower ends heads d d. These bolts are surrounded by tubular insulating material, f,

IOO

having tlangesff'l. Holes are made in the armature of su l'fieient size to receive the insulating` material, and. the armature is held upon the bolts by nuts on the upper ends, the aii'mature resting upon the lower flange, and the nuts bearin upon the upper Vflanges ol' the tubular insulating;` material.

The shaft ot' the motor is represented at f3. The pinion l", Fig. 1, is on the end of the shalt of the motor M, and is Carefully insulated from it, in the manner shown in Fig', 4, in which j) is the pinion proper, insulated from the liang'es r and v' bythe insulating' material i L' and held in plaee bythe bolts o o. The fiange r is vlixed to the shaft and. the flange v'r is loose. The bolts pass through them, as shown in the figure. The pinion P, Fig-.1, drives a large gear, G, carried on a counter-shaft, S,having its bearin at V and U, the bearings being' held on the erossbea1ns l) 'b and t) l). The eounter-slia'li't also carries the bevel-gear ll', whieh drives the two `gears I and J, one in one direction andthe other in the other direction. These two gears are free to turn on the axle fr', and not until the eluteh K is thrown into one or the other will the inotion be Communicated to the axle 5c', and the direction in which the locomotive moves will be determined by the gear into which the elnteh is forced. The el nteh is moved bythe arm 'n on the shaft- R, and this is turned lfrom one side to the other by the lever L or L at either end of the locomotive or ear. A sproek eti-wheel is placed on eaoh ot' the axles :r and .1." at .s' and s', and an endless chainv eonneets 'zu fw to move with the wheels/lf' n", thus giving' the benefit ot' the traetions ot' all t'onr wheels.

Havingl thus deserilwd in v invention, l claimn l. ln wnubination, the l'ranie, the upright bolts e (1, the insulation ff, the shat't il, the pinion l on said sllalt, meshing with the gear-wheel said pinion beine held to the shaft by the parts r, o, and r, and the insulatinel material fi, substantially as described.

2. In combination,the trame, the motor insulated therefrom, the shalit il, the pinion l), and the insulation between said shatt and pinion, substantially as described.

ln testimony whereof.' I have signed my name to this specification in the presence ot' two slibseril ing witnesses,

STDEY llOWE SHORT.

'Witnessesz RoDNEY Gomis, EDWARD (filmen. 

